You'll have no problem with your audio chipset. You'll probably need to find and install the proper .kext after you're booting into the Desktop. Not sure about the LAN... I have 2 (or more) nforce MB's with the RTL8201 chip and haven't had much luck. I found it much easier to just add a cheap Realtek 8139 or 8169 PCI ethernet card. They both work out-of-the-box.

The "hurdle" sequence is this:
1. Get HD bootable
2. Get past the "kernel panic" caused by the nvidia .kexts
3. Get through the "Initial Setup" and "Account Creation" without a hang
4. Find / Install proper .kexts for hardware that isn't natively supported after you're in the Desktop

You'll find the hardware specs of my working Zephyroth installs in this thread:
http://osx.kbot.de/comments.php?DiscussionID=4&page=1#Item_31

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Running both 10.5.8 and 10.6.4 on my stinking AMD/ATi machine...